Sofa



FIG. 1 is a front side perspective view of one embodiment of a sofa in accordance with the present design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front side perspective view of an alternative embodiment in accordance with the present design of FIG. 1;

FIG. 8 is a left side elevational view of the alternative embodiment illustrated in FIG. 7, the right side elevational view being a mirror image thereof;

FIG. 9 is a front elevational view of the alternative embodiment illustrated in FIG. 7;

FIG. 10 is a rear elevational view of the alternative embodiment illustrated in FIG. 7;

FIG. 11 is a top plan view of the alternative embodiment illustrated in FIG. 7; and,

FIG. 12 is a bottom plan view of the alternative embodiment illustrated in FIG. 7. 

CLAIM The ornamental design for a sofa, as shown and described. 